DE102006002698A1 - Inverter circuit for mains supply and for mains-independent operation - Google Patents
Inverter circuit for mains supply and for mains-independent operation Download PDFInfo
- Publication number
- DE102006002698A1 DE102006002698A1 DE102006002698A DE102006002698A DE102006002698A1 DE 102006002698 A1 DE102006002698 A1 DE 102006002698A1 DE 102006002698 A DE102006002698 A DE 102006002698A DE 102006002698 A DE102006002698 A DE 102006002698A DE 102006002698 A1 DE102006002698 A1 DE 102006002698A1
- Authority
- DE
- Germany
- Prior art keywords
- flyback transformer
- input
- flyback
- transformer
- primary side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
- H02M3/3372—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration of the parallel type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4807—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode having a high frequency intermediate AC stage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Die Erfindung betrifft eine Wechselrichterschaltung für die Einspeisung von Solarstrom oder Windstrom in ein Netz oder für netzunabhängigen Betrieb. Sie zeichnet sich durch eine minimale Anzahl von Bauteilen aus, so dass sie sehr klein gehalten werden kann.The invention relates to an inverter circuit for feeding solar power or wind power into a grid or for grid-independent operation. It is characterized by a minimal number of components, so that it can be kept very small.
Description
Die Erfindung betrifft eine Wechselrichterschaltung gemäß Oberbegriff des Patentanspruchs 1 oder 2.The The invention relates to an inverter circuit according to the preamble of claim 1 or 2.
Es
gibt verschiedene Wechselrichtertechniken für die solare Netzeinspeisung
und für
den netzunabhängigen
Betrieb. Nachstehend sollen diese kurz dargestellt werden:
Für die Netzeinspeisung
wird die Eingangsgleichspannung in Wechselspannungsimpulse mit variabler
Pulsbreite so umgewandelt, dass sich in einem nachgeschalteten Filter
ein sinusförmiger
Strom ausbildet, der in das Netz fließt. Aus Gründen des geringeren Gewichtes
und des besseren Wirkungsgrades (95–97% statt 92–94%) werden
dabei mehr und mehr Wechselrichter ohne Netztrafo hergestellt.There are different inverter technologies for solar grid feed-in and grid-independent operation. These are to be briefly outlined below:
For the grid feed, the input DC voltage is converted into AC pulses with variable pulse width so that a sinusoidal current is formed in a downstream filter that flows into the grid. For reasons of lower weight and better efficiency (95-97% instead of 92-94%) more and more inverters are produced without mains transformer.
Wechselrichter mit HF-Trafo sind zwar auch sehr leicht, aber der Wirkungsgrad liegt nur im Bereich von 92–94%. Allen Wechselrichtern mit HF-Trennung ist zu Eigen, dass sie aufwendig gestaltet sind, mehrfache HF-Stufen besitzen und die Energie im Magnetfeld der Trafokerne, dem elektrischen Feld von Speicherkondensatoren und zusätzlich noch einmal in Filterstufen zwischenspeichern.inverter Although with HF transformer are also very light, but the efficiency is only in the range of 92-94%. All inverters with RF isolation is their own that they are consuming own, have multiple RF levels and the power in the Magnetic field of transformer cores, the electric field of storage capacitors and additionally once in filter stages cache.
Aufgabe der Erfindung ist es also, einen Wechselrichter mit galvanischer Trennung zu schaffen, der nur einen HF-Wandler besitzt und nur einmal die Energie im Magnetfeld des HF-Sperrwandlertrafo zwischenspeichert.task The invention is therefore an inverter with galvanic To provide separation, which has only one RF converter and only once the Energy in the magnetic field of the RF flyback transformer latches.
Zur Lösung dieser Aufgabe dient ein Wechselrichter, der die Merkmale des Patentanspruchs 1 oder 2 aufweist.to solution This object is achieved by an inverter which has the features of the patent claim 1 or 2.
Dadurch wird erreicht, dass der Wirkungsgrad des erfindungsgemäßen Wechselrichters wie bei den trafolosen Wechselrichtern bei 95 bis 97% liegt und das Gewicht aufgrund der wenigen Bauteile, die für die Funktionen des Wechselrichters notwendig sind, deutlich niedriger als bei den bekannten Wechselrichtern ist.Thereby is achieved that the efficiency of the inverter according to the invention as with the transformerless inverters is 95 to 97% and the weight due to the few components necessary for the functions of the inverter are necessary, significantly lower than in the known inverters is.
Die Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert; es zeigen:The The invention will be explained in more detail with reference to a drawing; it demonstrate:
Es wird darauf hingewiesen, dass in den Figuren gleiche Teile mit gleichen Bezugszeichen versehen sind.It It should be noted that the same parts in the figures with the same Reference numerals are provided.
Am Eingang des Wechselrichters liegt die Eingangspannung Ue mit ihrem plus Pol an einer ersten Seite von zwei parallel geschalteten Sperrwandlertransformatoren Tr1 und Tr2, deren jeweils andere Seiten über Halbleiterschalter T1 und T2 an den minus Pol angeschlossen sind. Zwischen plus und minus liegt außerdem ein Kondensator C1, der beim Aufladen der Sperrtransformatoren Tr1 und Tr2 behilflich ist. Die Schaltung besteht im übrigen aus einer Primärseite P und einer Sekundärseite S.At the Input of the inverter is the input voltage Ue with her plus pole on a first side of two flyback transformers connected in parallel Tr1 and Tr2, their respective other sides via semiconductor switches T1 and T2 are connected to the minus pole. Between plus and minus is also located a capacitor C1, the charging of the blocking transformers Tr1 and Tr2 helps. The circuit is otherwise made a primary page P and a secondary side S.
Beim Einschalten von T1 wird dabei dem Sperrwandlertrafo Tr1 ein Stromwert eingeprägt und damit dem Trafokern eine magnetische Energie eingeladen, die 0,5·I2·L entspricht. Darin sind I der eingespeiste Strom und L die Induktivität des jeweiligen Sperrwandlertransformators Tr1 oder Tr2.When T1 is switched on, a current value is impressed on the flyback transformer Tr1, and thus the transformer core is charged with a magnetic energy corresponding to 0.5 · I 2 · L. Therein, I is the injected current and L is the inductance of the respective flyback converter transformer Tr1 or Tr2.
Nach dem Abschalten von T1 wandelt sich die magnetische Energie in Strom um, welcher in der Sekundärseite S über eine Diode D1 und einen aktiven Netzgleichrichter, bestehend aus T3–T6 in den Ausgangskondensator C2 fließt. Während der Ausladephase von Tr1 wird der Sperrwandlertrafo Tr2 eingeladen und entlädt sich über eine Diode D2 und den aktiven Netzgleichrichter T3 bis T6 in den Ausgangskondensator C2. Tr1 und Tr2 arbeiten dabei antizyklisch und liefern einen fast lückenlosen Strom in den Ausgangskondensator C2. Die von den Sperrwandlern aufgenommene Leistung beträgt Pin = 0,5·I2·L·f. Darin bedeuten: Pin die Eingangsleistung für die Sperrwandlertrafos Tr1 und Tr2, I der Strom, L die Induktivität und f die Frequenz.After switching off T1, the magnetic energy converts into current, which flows in the secondary side S via a diode D1 and an active power rectifier consisting of T3-T6 in the output capacitor C2. During the Ausladephase of Tr1 of the flyback transformer Tr2 is invited and discharges via a diode D2 and the active power rectifier T3 to T6 in the output capacitor C2. Tr1 and Tr2 work anticyclically and deliver an almost complete current into the output capacitor C2. The power consumed by the flyback converters is P in = 0.5 * I 2 * L * f. In which: P in the input power for the flyback transformers Tr1 and Tr2, I the current, L the inductance and f the frequency.
Am Eingang des Wechselrichters wird beim Einschalten von T1 dem Sperrwandler Tr1 ein Stromwert eingeprägt und damit dem Trafokern eine magnetische Energie eingeladen, die 0,5·I2·L entspricht. Nach dem Abschalten von T1 wandelt sich die magnetische Energie in Strom um, der in den Kondensator C2 fließt und überträgt dabei die Energie 0,5·U2·C. Der Spannungsverlauf an C2 kann durch die Menge der vom Sperrwandler gelieferten Energieportionen sinusförmig gesteuert werden. Je nach Lastbedingung am Kondensator C2 kann auch der dem Sperrwandler eingeladene Energieinhalt durch Veränderung des eingeprägten Stromes variiert werden.At the input of the inverter, when T1 is switched on, the flyback converter Tr1 becomes a current value and thus invited the transformer core a magnetic energy corresponding to 0.5 · I 2 · L. After switching off T1, the magnetic energy converts into current flowing into the capacitor C2 and thereby transfers the energy 0.5 · U 2 · C. The voltage curve at C2 can be controlled sinusoidally by the amount of energy delivered by the flyback converter. Depending on the load condition on the capacitor C2 and the energy content of the flyback converter can be varied by changing the impressed current.
Der Sperrwandler Tr2 wird durch T2 antizyklisch zum Sperrwandler Tr1 gesteuert und überträgt den Strom über D2 in den Ausgangskondensator C2. Um einen sinusförmigen Verlauf der Spannungshalbwellen an C2 mit steigender und mit abnehmender Spannung bei variablen Lastbedingungen realisieren zu können, werden die Sperrwandler Tr1 und Tr2 für steigende Spannung vorwärts und für fallende Spannung am Kondensator C2 rückwärts betrieben.Of the Blocker converter Tr2 is anticycled by T2 to the flyback converter Tr1 controlled and transmits the electricity via D2 in the output capacitor C2. To a sinusoidal course of voltage half-waves at C2 with increasing and with decreasing voltage at variable To be able to realize load conditions the flyback converters Tr1 and Tr2 are forward and forward for increasing voltage for falling Voltage at capacitor C2 operated backwards.
Beim Rückwärtsbetrieb werden für den primärseitigen Sperrwandler Tr1 auf der Primärseite die Diode D3 und auf der Sekundärseite der Transistor T7 aktiv und für den primärseitigen Sperrwandler Tr2 die primärseitige Diode D4 und der sekundärseitige Transistor T8.At the reverse operation be for the primary side Flyback converter Tr1 on the primary side the diode D3 and on the secondary side the transistor T7 is active and for the primary side Flyback converter Tr2 the primary side Diode D4 and the secondary-side transistor T8.
Der nachfolgende aktive Netzgleichrichter oder Polaritätsschalter, der aus den Halbleiterschaltern T3–T6 mit überbrückenden Dioden D5–D8 für den Rückwärtsbetrieb gebildet ist, schaltet jede zweite Halbwelle auf negative Spannung um und realisiert so die vollständige Sinuskurve.Of the subsequent active mains rectifiers or polarity switches, that of the semiconductor switches T3-T6 with bridging diodes D5-D8 for reverse operation is formed, every other half-wave switches to negative voltage um and so realizes the complete Sinusoid.
Claims (3)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006002698A DE102006002698A1 (en) | 2006-01-19 | 2006-01-19 | Inverter circuit for mains supply and for mains-independent operation |
US12/161,679 US20110058396A1 (en) | 2006-01-19 | 2007-01-18 | Flyback-type inverter circuit for network supply or for network-independent operation |
EP07711361A EP1974446A2 (en) | 2006-01-19 | 2007-01-18 | Inverter circuit for network supply or for network-independent operation |
PCT/EP2007/000432 WO2007082753A2 (en) | 2006-01-19 | 2007-01-18 | Flyback-type inverter circuit for network supply or for network-independent operation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006002698A DE102006002698A1 (en) | 2006-01-19 | 2006-01-19 | Inverter circuit for mains supply and for mains-independent operation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006002698A1 true DE102006002698A1 (en) | 2007-08-02 |
Family
ID=38171376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102006002698A Withdrawn DE102006002698A1 (en) | 2006-01-19 | 2006-01-19 | Inverter circuit for mains supply and for mains-independent operation |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110058396A1 (en) |
EP (1) | EP1974446A2 (en) |
DE (1) | DE102006002698A1 (en) |
WO (1) | WO2007082753A2 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9418864B2 (en) | 2008-01-30 | 2016-08-16 | Infineon Technologies Ag | Method of forming a non volatile memory device using wet etching |
CN101931215B (en) * | 2010-04-16 | 2013-06-05 | 艾默生网络能源有限公司 | Wind, light and electricity integrated system and over-voltage protection method of rectifier thereof |
US9478989B2 (en) | 2012-01-17 | 2016-10-25 | Infineon Technologies Austria Ag | Power converter circuit with AC output |
US9425622B2 (en) | 2013-01-08 | 2016-08-23 | Infineon Technologies Austria Ag | Power converter circuit with AC output and at least one transformer |
BR112014017460A8 (en) * | 2012-01-17 | 2017-07-04 | Infineon Technologies Austria Ag | power conversion circuit, system and power supply method |
US9401663B2 (en) | 2012-12-21 | 2016-07-26 | Infineon Technologies Austria Ag | Power converter circuit with AC output |
US9461474B2 (en) | 2012-01-17 | 2016-10-04 | Infineon Technologies Austria Ag | Power converter circuit with AC output |
US9484746B2 (en) | 2012-01-17 | 2016-11-01 | Infineon Technologies Austria Ag | Power converter circuit with AC output |
EP2717459A1 (en) | 2012-10-03 | 2014-04-09 | Belenos Clean Power Holding AG | DC/AC converter with intermediate rectified sinusoid with offset and PWM inversion |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6315674A (en) * | 1986-07-03 | 1988-01-22 | Kyosan Electric Mfg Co Ltd | Dc/ac converter |
DE3812861C2 (en) * | 1988-04-18 | 1990-09-27 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
US5627740A (en) * | 1994-12-14 | 1997-05-06 | International Business Machines Corporation | Low dissipation current sensing system for a switched DC power supply |
EP1035640A1 (en) * | 1999-03-08 | 2000-09-13 | Hendrik Oldenkamp | Apparatus for converting a direct current into an alternating current |
DE10356514A1 (en) * | 2003-12-03 | 2005-07-14 | Siemens Ag | Power supply means |
Family Cites Families (14)
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---|---|---|---|---|
DE3233248A1 (en) * | 1982-09-08 | 1984-03-08 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Circuit for an on-board charging apparatus for charging a battery of an electric vehicle |
US5019954A (en) * | 1989-06-23 | 1991-05-28 | Allied-Signal Inc. | AC/DC conversion with reduced supply waveform distortion |
ATE106634T1 (en) * | 1989-06-30 | 1994-06-15 | Siemens Ag | CONVERTER WITH ACTUAL CURRENT VALUE DETERMINATION. |
US5008795A (en) * | 1990-03-23 | 1991-04-16 | Unisys Corporation | Switched capacitor interleaved forward power converter |
US5625539A (en) * | 1994-05-30 | 1997-04-29 | Sharp Kabushiki Kaisha | Method and apparatus for controlling a DC to AC inverter system by a plurality of pulse-width modulated pulse trains |
WO1998033267A2 (en) * | 1997-01-24 | 1998-07-30 | Fische, Llc | High efficiency power converter |
JP3694578B2 (en) * | 1997-09-30 | 2005-09-14 | 新電元工業株式会社 | Switching power supply and voltage rectification method for secondary winding |
DE19855615A1 (en) * | 1997-12-03 | 1999-06-10 | Fuji Electric Co Ltd | Switched network supply device |
JP3673075B2 (en) * | 1998-03-09 | 2005-07-20 | 新電元工業株式会社 | Switching power supply |
US6545883B2 (en) * | 2001-05-07 | 2003-04-08 | Artesyn Technologies, Inc. | Integrated boost-asymmetrical half-bridge converter |
EP1442512A2 (en) * | 2001-11-05 | 2004-08-04 | Siemens AG Österreich | Voltage converter |
US7450402B2 (en) * | 2002-04-12 | 2008-11-11 | Det International Holding Limited | Soft switching high efficiency flyback converter |
US6954366B2 (en) * | 2003-11-25 | 2005-10-11 | Electric Power Research Institute | Multifunction hybrid intelligent universal transformer |
US7050311B2 (en) * | 2003-11-25 | 2006-05-23 | Electric Power Research Institute, Inc. | Multilevel converter based intelligent universal transformer |
-
2006
- 2006-01-19 DE DE102006002698A patent/DE102006002698A1/en not_active Withdrawn
-
2007
- 2007-01-18 WO PCT/EP2007/000432 patent/WO2007082753A2/en active Application Filing
- 2007-01-18 EP EP07711361A patent/EP1974446A2/en not_active Withdrawn
- 2007-01-18 US US12/161,679 patent/US20110058396A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6315674A (en) * | 1986-07-03 | 1988-01-22 | Kyosan Electric Mfg Co Ltd | Dc/ac converter |
DE3812861C2 (en) * | 1988-04-18 | 1990-09-27 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
US5627740A (en) * | 1994-12-14 | 1997-05-06 | International Business Machines Corporation | Low dissipation current sensing system for a switched DC power supply |
EP1035640A1 (en) * | 1999-03-08 | 2000-09-13 | Hendrik Oldenkamp | Apparatus for converting a direct current into an alternating current |
DE10356514A1 (en) * | 2003-12-03 | 2005-07-14 | Siemens Ag | Power supply means |
Also Published As
Publication number | Publication date |
---|---|
US20110058396A1 (en) | 2011-03-10 |
EP1974446A2 (en) | 2008-10-01 |
WO2007082753A2 (en) | 2007-07-26 |
WO2007082753A3 (en) | 2007-09-07 |
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